diff --git a/sqlparse/keywords.py b/sqlparse/keywords.py
index 761d14ea..7ad74baf 100644
--- a/sqlparse/keywords.py
+++ b/sqlparse/keywords.py
@@ -22,10 +22,10 @@ def is_keyword(value):
 
 SQL_REGEX = {
     'root': [
-        (r'(--|//|# )\+.*?(\r\n|\r|\n|$)', tokens.Comment.Single.Hint),
+        (r'(--|# )\+.*?(\r\n|\r|\n|$)', tokens.Comment.Single.Hint),
         (r'/\*\+[\s\S]*?\*/', tokens.Comment.Multiline.Hint),
 
-        (r'(--|//|# ).*?(\r\n|\r|\n|$)', tokens.Comment.Single),
+        (r'(--|# ).*?(\r\n|\r|\n|$)', tokens.Comment.Single),
         (r'/\*[\s\S]*?\*/', tokens.Comment.Multiline),
 
         (r'(\r\n|\r|\n)', tokens.Newline),
diff --git a/tests/files/slashcomment.sql b/tests/files/slashcomment.sql
deleted file mode 100644
index 90e3089d..00000000
--- a/tests/files/slashcomment.sql
+++ /dev/null
@@ -1,5 +0,0 @@
-select * from user;
-//select * from host;
-select * from user;
-select * // foo;
-from foo;
diff --git a/tests/test_split.py b/tests/test_split.py
index ccb84a89..a93e3d40 100644
--- a/tests/test_split.py
+++ b/tests/test_split.py
@@ -52,22 +52,6 @@ def test_split_dashcomments_eol(s):
     assert len(stmts) == 1
 
 
-def test_split_slashcomments(load_file):
-    sql = load_file('slashcomment.sql')
-    stmts = sqlparse.parse(sql)
-    assert len(stmts) == 3
-    assert ''.join(str(q) for q in stmts) == sql
-
-
-@pytest.mark.parametrize('s', ['select foo; // comment\n',
-                               'select foo; // comment\r',
-                               'select foo; // comment\r\n',
-                               'select foo; // comment'])
-def test_split_slashcomments_eol(s):
-    stmts = sqlparse.parse(s)
-    assert len(stmts) == 1
-
-
 def test_split_begintag(load_file):
     sql = load_file('begintag.sql')
     stmts = sqlparse.parse(sql)